And I like to roam the land

See the City for Yourself
For information about seeing the underground city in Cades Cove, don’t check back here. This entire story has been an April Fools’ Day joke! To the best of our knowledge, there aren’t any subterranean cities located beneath the Smoky Mountains.

Doctor Prog

According to Paulides there are 'mysterious disappearances' at most of the state and national parks.
He has written several books and made many videos...it's become a money maker for him.
I'm not saying people don't go missing but this is to be expected at many of the parks that are quite large and rugged in some places. He has tried to link this to both Bigfoot and even 'unknown beings'. Some have been linked to predators.But he never comes right out and says this. I watched his videos over a year ago...and he has a website also.
Some of the missing cases are strange but again when you are dealing with so many people who go hiking on their own in wild places....shite happens.